Effects of fluoride treatment on phosphoric acid-etching in primary teeth: An AFM observation

Choi, Samjin; Rhee, Ye-Ri; Park, Jeong Hoon; Lee, Gi-Ja; Kim, Kyung-Sook; Park, Jaehong; Park, Young-Guk; Park, Hun-Kuk

doi:10.1016/j.micron.2010.02.002

Cited by 17 publications

(18 citation statements)

References 46 publications

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“…The external noise was eliminated by placing the AFM machine on an active vibration isolation table inside a passive vibration isolation table. Data acquisition and image processing were performed with SPIP (Scanning Probe Image Processor Version 4.8, Lyngby; Image Metrology, Denmark) (Choi et al 2010). The bracket wings were ground with a highspeed hand drill and a chamfer bur to expose the slot surface of the bracket for the AFM studies.…”

Section: Observationsmentioning

confidence: 99%

“…In addition, it does not observe the real-time changes in the sample surfaces, and provide simultaneously quantitative and qualitative information of the sample surfaces (Cassinelli and Morra 1994;Marshall et al 1995). In contract, atomic force microscopy (AFM) provides three-dimensional (3D) information of the morphology as well as quantitative information regarding the surface morphology with minimal sample preparation (Choi et al 2010). Most studies using AFM in the field of orthodontics concentrated on the surface roughness of archwires (Alcock et al 2009;Bourauel et al 1998;Huang 2007;Widu et al 1999).…”

Section: Introductionmentioning

confidence: 99%

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Changes in Ultrastructure and properties of bracket slots after Orthodontic treatment with bicuspid extraction

Choi¹,

Park²,

Cheong³

et al. 2011

Scanning

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This study examined the effects of an orthodontic treatment using a bicuspid extraction on the surface roughness and mechanical properties of stainless steel (SS) brackets adjacent to the extraction space. Four experimental groups were employed; groups 1 and 2 used the Archist(®) SS brackets before and after the extraction treatment, respectively, and groups 3 and 4 used the Victory(®) SS brackets before and after the extraction treatment, respectively. The slot surfaces of the bracket were scanned in air at a resolution of 512 × 512 pixels with a scan speed of 0.8 line/s. The visco-elasticity of the bracket slot was determined from the force-distance curves of atomic force microscopy. The orthodontic treatment with bicuspid extraction led to a significant increase (p<0.0001) in surface roughness in both groups. In particular, the Archist(®) SS brackets showed more changes than the Victory(®) SS brackets (p<0.0005). However, there was no significant difference in properties of the Victory(®) and Archist(®) brackets between before and after treatment. This suggests that the orthodontic treatment with bicuspid extraction is more responsible for the changes in surface roughness than the properties of the brackets.

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Section: Observationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in Ultrastructure and properties of bracket slots after Orthodontic treatment with bicuspid extraction

Choi¹,

Park²,

Cheong³

et al. 2011

Scanning

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“…This tissue represents the first barrier to damage for teeth. There are several studies that have focused on experiments and analysis of enamel, but there has been difficulty in standardizing the parameters, and therefore, in comparing the results (Agrawal et al, ; Batina et al, ; Cheng et al, ; Choi et al, ; Cui and Ge, ; Farina et al, ; Finke et al, ;Ge et al, ; Guidoni et al, ; Lippert et al, 2004; Loyola‐Rodriguez et al, 2009; Mahmoud, Ahmed, Mahmoud, Grawish and Zaher, ; Parkinson, Shahzad and Rees, ; Sanches et al, ; Wang et al, ).…”

Section: Discussionmentioning

confidence: 99%

Enamel sample preparation for AFM: Influence on roughness and morphology

Sorozini

Perez

Rocha

2018

Microscopy Res & Technique

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Human dental enamel is organized by prisms that are structured between 3 and 6 µm in diameter. Determining the relationships between different treatments on the surface of enamel using ultrastructural analysis is the purpose of many in vitro experiments. Different sample pretreatments have been reported in the literature. Grinding and polishing are common procedures for enamel preparation. They provide a flat and standardized surface, which is imperative for the use of some techniques such as ATR‐FTIR. However, for morphological analysis, SEM and AFM represent easier methods to measure and reduce the biological sample variation. Therefore, the objective of this study was to establish how different forms of enamel preparation can influence the advent of artifacts during ultrastructural observation, especially by AFM analysis. Four groups (n = 10) were tested: (a) without preparation; (b) polishing with a diamond paste; (c) grinding with decreasing granulations of silicon carbide papers; (d) grinding with polishing. Images were obtained using the Peak‐Force Tapping mode. After the first images were obtained, all fragments were acid etched with 37% phosphoric acid for 30 seconds, rinsed for 60 seconds, and dried intensively. Upon grinding and polishing, the exposure of the inner enamel surfaces provided a less mineralized layer that was marked by scratches and a higher susceptibility to treatments. Moreover, using native enamel provided more valuable information on the surface and the roughness changes for clinical applications. In addition, phosphoric acid is an option for observing the prismatic arrangement after grinding and/or polishing changes the morphology. Research Highlights The use of native enamel samples to investigate the effects of different treatments on surface should be preferred in research, when the technique allows it.

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“…Data acquisition and image processing were performed with SPIP ver. 4.8 (Image Metrology, Denmark) [4]. The bracket wings were ground with a high speed hand drill and a chamfer bur to expose the slot surface of the bracket for the AFM studies.…”

Section: B Observationsmentioning

confidence: 99%

Effects of Bicuspid Extraction Treatments on the Morphology and Property of Orthodontic Brackets

Choi

Cheong

Kim

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

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This study observed the effects of an orthodontic bicuspid extraction treatment on the morphologies and property of the 3M Victory® and the DaeSeung Archist® stainless steel brackets adjacent to the extraction space. The slot surfaces of the bracket were scanned in air by atomic force microscopy. The visco-elasticity of bracket slot was determined from the forcedistance curves of atomic force microscopy. The orthodontic treatment with bicuspid extraction led to a significant increase (p < 0.0001) in surface roughness in both groups. In particular, the Archist® stainless steel brackets showed more changes than the Victory® stainless steel brackets, p < 0.0005. However, there was no significant difference in properties of the Victory® and Archist® brackets between before and after treatment. This suggests that the bicuspid extraction treatment is more associated with the changes in surface roughness than the properties of the brackets. 3M Victory® is more favorable than DaeSeung Archist® stainless steel brackets because it showed lower roughness changes compared to the Archist® bracket.

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Effects of fluoride treatment on phosphoric acid-etching in primary teeth: An AFM observation

Cited by 17 publications

References 46 publications

Changes in Ultrastructure and properties of bracket slots after Orthodontic treatment with bicuspid extraction

Changes in Ultrastructure and properties of bracket slots after Orthodontic treatment with bicuspid extraction

Enamel sample preparation for AFM: Influence on roughness and morphology

Effects of Bicuspid Extraction Treatments on the Morphology and Property of Orthodontic Brackets

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